Physics 9702 · AS & A Level · Density and pressure

Density and pressure — practice question

A student determines the density of a solid steel cube during an experiment. The recorded mass is $975\,\text{g} \pm 10\,\text{g}$ and the recorded side length is $50\,\text{mm} \pm 1\,\text{mm}$. What value is obtained for the density of the steel?

  • A$7.8\,\text{g cm}^{-3} \pm 3.0\%$
  • B$7.8\,\text{g cm}^{-3} \pm 7.0\%$
  • C$7.8\,\text{g cm}^{-3} \pm 11\%$
  • D$7.8\,\text{g cm}^{-3} \pm 13\%$

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